全文获取类型
收费全文 | 27801篇 |
免费 | 742篇 |
专业分类
管理学 | 3578篇 |
民族学 | 150篇 |
人才学 | 7篇 |
人口学 | 2745篇 |
丛书文集 | 155篇 |
教育普及 | 3篇 |
理论方法论 | 2529篇 |
现状及发展 | 2篇 |
综合类 | 348篇 |
社会学 | 13609篇 |
统计学 | 5417篇 |
出版年
2023年 | 158篇 |
2021年 | 142篇 |
2020年 | 423篇 |
2019年 | 629篇 |
2018年 | 666篇 |
2017年 | 946篇 |
2016年 | 688篇 |
2015年 | 502篇 |
2014年 | 628篇 |
2013年 | 4787篇 |
2012年 | 941篇 |
2011年 | 828篇 |
2010年 | 669篇 |
2009年 | 646篇 |
2008年 | 731篇 |
2007年 | 724篇 |
2006年 | 648篇 |
2005年 | 645篇 |
2004年 | 629篇 |
2003年 | 566篇 |
2002年 | 605篇 |
2001年 | 691篇 |
2000年 | 624篇 |
1999年 | 607篇 |
1998年 | 453篇 |
1997年 | 425篇 |
1996年 | 426篇 |
1995年 | 415篇 |
1994年 | 369篇 |
1993年 | 381篇 |
1992年 | 427篇 |
1991年 | 406篇 |
1990年 | 395篇 |
1989年 | 403篇 |
1988年 | 372篇 |
1987年 | 345篇 |
1986年 | 340篇 |
1985年 | 388篇 |
1984年 | 380篇 |
1983年 | 358篇 |
1982年 | 283篇 |
1981年 | 248篇 |
1980年 | 262篇 |
1979年 | 286篇 |
1978年 | 221篇 |
1977年 | 218篇 |
1976年 | 199篇 |
1975年 | 186篇 |
1974年 | 173篇 |
1973年 | 139篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
Social media is pervasive in the lives of young people, and this paper critically analyses how politically engaged young people integrate social media use into their existing organisations and political communications. This qualitative research project studied how young people from a broad range of existing political and civic groups use social media for sharing information, mobilisation and, increasingly, as a means to redefine political action and political spaces. Twelve in-person focus groups were conducted in Australia, the USA and the UK with matched affinity groups based on university campuses. The groups were of four types: party political group, issue-based group, identity-based group and social group. Our focus group findings suggest that this in-depth approach to understanding young people's political engagement reveals important group-based differences emerging in young people's citizenship norms: between the dutiful allegiance to formal politics and a more personalised, self-actualising preference for online, discursive forms of political engagement and organising. The ways in which political information is broadcast, shared and talked about on social media by engaged young people demonstrate the importance of communicative forms of action for the future of political engagement and connective action. 相似文献
12.
13.
A. Knobel’ 《Russian social science review : a journal of translations》2019,60(2):137-161
This article analyzes the development prospects and problems for the Eurasian Economic Union (EAEU). It examines issues of integration within the EAEU, as well as interactions with other countries, both CIS (Commonwealth of Independent States) and non-CIS. The main problem of integration within the EAEU is the dominance of redistributive motives over productive ones. This article assesses the extent of Russian oil and gas transfers to EAEU partners and the impact of tax maneuvers on their size. It shows that the creation of mechanisms for redistributing profits within the EAEU will allow a positive economic effect to materialize from free trade agreements with non-CIS countries. The article assesses the risks for the EAEU related to Russia’s introduction of a unilateral ban on food imports from countries on the sanctions list and to the possible establishment of tariffs on trade with Ukraine. 相似文献
14.
A. M. Abd El-Raheem 《Journal of Statistical Computation and Simulation》2019,89(16):3075-3104
The generalized half-normal (GHN) distribution and progressive type-II censoring are considered in this article for studying some statistical inferences of constant-stress accelerated life testing. The EM algorithm is considered to calculate the maximum likelihood estimates. Fisher information matrix is formed depending on the missing information law and it is utilized for structuring the asymptomatic confidence intervals. Further, interval estimation is discussed through bootstrap intervals. The Tierney and Kadane method, importance sampling procedure and Metropolis-Hastings algorithm are utilized to compute Bayesian estimates. Furthermore, predictive estimates for censored data and the related prediction intervals are obtained. We consider three optimality criteria to find out the optimal stress level. A real data set is used to illustrate the importance of GHN distribution as an alternative lifetime model for well-known distributions. Finally, a simulation study is provided with discussion. 相似文献
15.
de Jong Petra W. Caarls Kim de Valk Helga A. G. 《Population research and policy review》2022,41(2):671-694
Population Research and Policy Review - The welfare state can be perceived as a safety net which helps individuals adjust to situations of risk or transition. Starting from this idea of the welfare... 相似文献
16.
Statistics and Computing - This article focuses on the challenging problem of efficiently detecting changes in mean within multivariate data sequences. Multivariate changepoints can be detected by... 相似文献
17.
18.
As important members of research teams, statisticians bear an ethical responsibility to analyze, interpret, and report data honestly and objectively. One way of reinforcing ethical responsibilities is through required courses covering a variety of ethics-related topics at the graduate level. We assessed ethics requirements for graduate-level statistics training programs in the United States for the 2013–2014 academic year using the websites of 88 universities, examining 103 biostatistics programs, and 136 statistics degree programs. We categorized programs’ ethics training requirements as required or not required. Thirty-one (35.1%) universities required an ethics course for at least some degree students. Sixty-two (25.5%) degree programs required an ethics course for at least some students. The majority (77.4%) of required courses were worth 0 or 1 credit. Of the 177 programs without an ethics requirement, 19 (10.7%) listed an ethics elective. Although a single ethics course is insufficient for instilling an ethical approach to science, degree programs that model expectations through coursework point to the value of ethics in science. More training programs should prepare statisticians to consider the ethical dimensions of their work through required coursework. Supplementary materials for this article are available online. 相似文献
19.
Aging in the Era of Regenerative Medicine: Analysis of Aging‐Related Representations among Canadian Researchers 下载免费PDF全文
Céline Lafontaine 《The Sociological quarterly》2015,56(1):62-79
Explicitly aimed at understanding and controlling molecular and cellular processes at the root of senescence and biological aging, regenerative medicine aspires to artificially reproduce the biological processes that enable the body to regenerate itself. This no longer involves conserving the body's state of balance by combating disease, as in clinical medicine, but rather fighting degeneration itself. From stem cell research to gene therapy to the production of replacement tissues, regenerative medicine perfectly corresponds to the logic of biomedicalization specific to postmodern society. Based on a series of 18 interviews conducted with Canadian researchers and clinicians in the field of regenerative medicine, this article seeks to understand representations of the aging body among researchers in this field. Seen from a strictly negative angle, aging is assimilated by researchers to an inevitable catastrophe that nevertheless must be combated. More closely observing the theoretical model of regenerative biology and the types of treatments developed, it can be observed, however, that this medicine of the future does not target the elderly, but rather promises youth the ability to regenerate themselves to avoid aging. 相似文献
20.